Sökning: "multiband"

Visar resultat 6 - 10 av 19 uppsatser innehållade ordet multiband.

  1. 6. Design of Cellular and GNSS Antenna for IoT Edge Device

    Magister-uppsats, Högskolan i Halmstad/Akademin för informationsteknologi

    Författare :Ioannis Broumas; [2019]
    Nyckelord :IoT; Internet of Things; Edge device; LTE; 4G; LTE-M1; Antenna; Antenna System; Narrow Band IoT; NB-IoT; Plannar Antennas; GPS; PCB; multiband antenna;

    Sammanfattning : Antennas are one of the most sensitive elements in any wireless communication equipment. Designing small-profile, multiband and wideband internal antennas with a simple structure has become a necessary challenge. LÄS MER

  3. 7. Multiband functional magnetic resonance imaging (fMRI) for functional connectivity assessments

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

    Författare :Cecilia Björnfot; [2018]
    Nyckelord :;

    Sammanfattning : During resting state the brain exhibits synchronized activity within all major brain networks. Using blood oxygen level dependent (BOLD) resting state functional magnetic resonance imaging (fMRI) based detection it is possible to quantify the degree of correlation, connectivity, between regions of interest and assess information regarding the integrity of the inter-regional functional integration. LÄS MER

  4. 8. Detecting Cardiac Pulsatility and Respiration using Multiband fMRI

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

    Författare :Joakim Jonsson; [2018]
    Nyckelord :fMRI; multiband; cardiac pulsation; respiration; correlation analysis; neuroimaging;

    Sammanfattning : Purpose: Arterial stiffening poses an increased risk of cerebrovascular diseases, cognitive impairments, and even dementia as cardiac pulsations reach further into the brain causing white matter hyperintensities and microbleeds. Therefore it is of interest to obtain methods to estimate and map cardiac related pulsatility in the brain. LÄS MER

  5. 9. A STUDY OF A MULTI BAND ANTENNA’S PERFORMANCE FOR DIFFERENT FREQUENCIES AND RADIO ACCESS TECHNOLOGIES

    Master-uppsats, KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Författare :Kuldeep Pareek; [2016]
    Nyckelord :;

    Sammanfattning : There has been and will be a constant development in the field of communication systems and telecommunication in the form of network designs, access technologies, and equipment. Today, most of the mobile users are in indoors environments such as buildings, metros, arenas etc. LÄS MER

  7. 10. Pattern Reconfigurable MIMO Antennas for Multiband LTE Operation

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Rui Ma; Ioannis Chountalas; [2015]
    Nyckelord :Technology and Engineering;

    Sammanfattning : Nowadays, multiple antennas are becoming widely used in small mobile terminals as they can significantly improve wireless communication performance in terms of link reliability and spectral efficiency. Also, pattern reconfiguration is another new trend for antenna design as it enables the antennas to adapt to different propagation and user scenarios. LÄS MER